dnl Persuade glibc <unistd.h> to declare group_member().
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
dnl Do this replacement check manually because I want the hyphen
dnl (not the underscore) in the filename.
AC_CHECK_FUNC([group_member], , [
dnl Persuade glibc <unistd.h> to declare group_member().
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
dnl Do this replacement check manually because I want the hyphen
dnl (not the underscore) in the filename.
AC_CHECK_FUNC([group_member], , [